<template>
  <div>
    <div class="search">
      <input
        type="text"
        class="search-biao"
        v-model="keyword"
        placeholder="输入城市名或拼音"
      />
    </div>
    <div>
      <div class="search-content" ref="search" v-if="keyword">
        <ul>
          <li
            class="search-biao border-bottom"
            v-for="item in list"
            :key="item"
            @click="handleCityClick(item.name)"
          >
            {{ item.name }}
          </li>
          <li class="search-biao border-bottom" v-show="hasNoData">没有匹配到数据</li>
        </ul>
      </div>
    </div>
  </div>
</template>

<script>
import Bscroll from "better-scroll";
export default {
  props: {
    cities: Object,
  },
  data() {
    return {
      keyword: "",
      timer: null,
      list: [],
    };
  },
  computed: {
    hasNoData() {
      return !this.list.length;
    },
  },
  watch: {
    keyword() {
      if (this.timer) {
        clearTimeout(this.timer);
      }
      if (!this.keyword) {
        this.list = [];
        return;
      }
      this.timer = setTimeout(() => {
        const result = [];
        for (let i in this.cities) {
          this.cities[i].forEach((value) => {
            if (
              value.spell.indexOf(this.keyword) > -1 ||
              value.name.indexOf(this.keyword) > -1
            ) {
              result.push(value);
            }
          });
        }

        this.list = result;
      }, 10);
    },
  },
  mounted() {
    this.scroll = new Bscroll(this.$refs.search);
  },
  updated() {
    //重新计算高度
    this.scroll.refresh();
  },
  methods: {
    handleCityClick(city) {
      this.$store.commit("changeCity", city);
      this.$router.push("/");
    },
  },
};
</script>

<style lang="stylus" scoped>
@import '~style/var.styl'
.search
  height: .72rem
  padding: 0 .1rem
  background: $bgColor
  .search-biao
    box-sizing: border-box
    width: 100%
    height: .62rem
    padding: 0 .1rem
    line-height: .62rem
    text-align: center
    border-radius: .06rem
    color: #666
.search-content
	z-index: 1;
	position absolute
	overflow hidden
	top: 1.58rem;
	left: 0
	right: 0
	bottom: 0
	background:#eee
	.search-biao
		text-align left
		padding-left .2rem
		line-height 0.62rem
		color #666
		background-color #fff
</style>
